TRENTON — Technical difficulties are preventing a city man accused in the June 2012 shooting death of Trenton resident Wilfredo Rivera to see crucial video evidence in the case as he considers a plea deal that would include a 24-year prison sentence.

The defense attorney representing Douglas Battle, 23, said efforts to show him video surveillance footage at the Hudson County Correctional Facility have been unsuccessful. Battle is incarcerated there due to his alleged July 2012 attack on James DePalma, a Mercer County Corrections officer.

Assistant Prosecutor Brian McCauley said the footage, which shows Battle leaving the scene of the shooting shortly after the incident carrying a gun and throwing it in a car, is the prosecution’s most important piece of evidence.

Since the footage is on an external hard drive, Battle has to be shown the footage on a computer, which his attorney, Stephen Slaven, was unable to bring to the facility.

Superior Court Judge Robert Billmeier extended the window for Battle to consider the deal to next month.

Under the terms of the plea deal offered by prosecutors, Battle would have to plead guilty to aggravated manslaughter and serve 85 percent of the sentence. If a plea deal is not reached, a trial date will be set.

If found guilty of murder at trial, Battle could face up to 67 years in prison with no possibility of parole, McCauley said.

In addition to the surveillance footage, prosecutors have said Battle was identified by a witness as the man who shot and killed Rivera in an apartment hallway.

Rivera, also known as “Murder Marty,” ran out of the building at 517 Hoffman Ave. and into an adjacent building, where he collapsed. He was later found by police and was rushed to the hospital, but he died from the injuries within 30 minutes of being shot.

Battle had previously maintained his innocence, telling police when he was arrested that while he was at the scene of the crime and had a gun, he did not shoot Rivera.

McCauley said under the plea deal, Battle also would plead guilty to third-degree aggravated assault in connection with the attack on DePalma.

McCauley said the five-year sentence associated with the assault, in which Battle allegedly broke DePalma’s jaw, would run concurrent with the 24-year sentence in the Rivera killing. Slaven said previously his client and the officer got into a verbal argument but no punches were thrown.